package com.qf.dao;

import org.apache.ibatis.annotations.Update;

/**
 * @author 汤奇
 * @version V1.0
 * @Project BookPro
 * @Package com.qf.dao
 * @Description:
 * @Date 2022/7/12 13:13
 */
public interface UserMapper {

    /**\
     * a账户减500
     */
    @Update("update user set money=money-500 where `name`='张三'")
    void aReduce();
}
